Insert bearing with inner and outer ring combined sealing function

Abstract

The invention provides an insert bearing with an inner and outer ring combined sealing function, and belongs to the technical field of bearings, the insert bearing comprises a seat body, an insert bearing assembly and a combined sealing structure, and the seat body is provided with a mounting groove with a spherical inner wall surface; the insert bearing assembly is arranged in the mounting groove, the outer diameter surface of an outer ring body of the insert bearing is a first spherical surface matched with the inner wall surface of the mounting groove, the front end of an inner ring body axially extends and forms an annular sealing part on the outer ring of the end, and the sealing part forms a second spherical surface sharing the same spherical surface with the first spherical surface; clamping grooves are formed in the inner side wall of the outer ring body and the outer side wall of the inner ring body in the circumferential direction; the combined sealing structure is provided with an outer circumferential edge and an inner circumferential edge, and the outer circumferential edge and the inner circumferential edge are correspondingly clamped into the clamping grooves of the outer ring body and the inner ring body respectively so as to seal the gap between the outer ring body and the inner ring body. The bearing has the technical effects that the sealing effect between the inner ring and the outer ring is good, the waterproof and dustproof effects are good, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of bearings, and more specifically, relates to an outer spherical bearing with a combined sealing function of inner and outer rings. Background Art

[0002] The outer spherical bearing is actually a variation of the deep groove ball bearing. Its characteristic is that the outer diameter surface of its outer ring is spherical, which can be matched into the corresponding concave spherical surface of the bearing seat to play a self-aligning role. The outer spherical bearing is mainly used to bear radial and axial combined loads, mainly radial loads.

[0003] The problems existing in the external spherical bearing in the prior art are as follows: 1) The sealing ring located between the outer ring and the inner ring of the bearing, the outer circumference of the sealing ring is clamped on the inner side of the outer ring of the bearing, and the inner circumference of the sealing ring is in contact with the outer side of the inner ring of the bearing. The sealing method of abutting contact will lead to poor sealing effect, and it is easy for dust, water, etc. to enter the inside of the bearing, thereby affecting the rolling elements and further affecting the service life of the bearing. 2) The lubrication method of the external spherical bearing is mainly to lubricate the rolling elements, and there is no structure for lubricating the outer ring of the bearing and the bearing seat. For application scenarios where the shaft swings frequently, the outer ring of the bearing and the bearing seat are prone to wear due to insufficient lubrication, thereby affecting the service life of the bearing and the bearing seat. Summary of the invention

[0004] The purpose of the present invention is to provide an outer spherical bearing with a combined sealing function of inner and outer rings, aiming to solve the technical problem that in the prior art, a sealing ring is used between the outer ring and the inner ring of the outer spherical bearing, and the sealing method between the sealing ring and the outer side of the inner ring is abutment contact, resulting in poor sealing effect and poor dust and water proofing effect, thereby affecting the service life of the bearing.

[0005] To achieve the above object, the technical solution adopted by the present invention is to provide an outer spherical bearing with a combined sealing function of inner and outer rings, comprising: The seat body has a mounting groove with a spherical inner wall surface; An outer spherical bearing assembly is arranged in the installation groove, the outer spherical bearing comprises an inner ring body, an outer ring body and a rolling body, the outer diameter surface of the outer ring body is a first spherical surface adapted to the inner wall surface of the installation groove, the front end of the inner ring body extends axially and forms an annular sealing portion on the outer ring of the end, the sealing portion forms a second spherical surface cospherical with the first spherical surface; the inner inner wall of the outer ring body and the outer outer wall of the inner ring body are both formed with a clamping groove along their circumferential direction; The combined sealing structure has an outer circumference and an inner circumference, wherein the outer circumference and the inner circumference are respectively correspondingly inserted into the slots of the outer ring body and the inner ring body to seal the gap between the outer ring body and the inner ring body.

[0006] As another embodiment of the present application, the combined sealing structure includes: A first sealing ring, wherein the outer circumference of the first sealing ring is inserted into the slot of the outer ring body, and the inner circumference of the first sealing ring extends toward the inner side of the first sealing ring and is connected with a bifurcated structure; The second sealing ring has its inner circumference inserted into the slot of the inner ring body and its outer circumference inserted into the bifurcated structure, so that the first sealing ring and the second sealing ring cooperate to form a combined seal.

[0007] As another embodiment of the present application, the bifurcated structure includes: A first sealing ring, wherein the outer circumference of the first sealing ring is connected to the inner circumference of the first sealing ring; A second sealing ring, wherein the outer circumference of the second sealing ring is connected to the inner circumference of the first sealing ring, a fork is formed between the first sealing ring and the second sealing ring, a gap is formed between the inner circumference of the first sealing ring and the inner circumference of the second sealing ring along the axial direction of the outer spherical bearing assembly, and the outer circumference of the second sealing ring is inserted into the gap.

[0008] As another embodiment of the present application, a plurality of spaced tension springs are connected between the first sealing ring and the second sealing ring, one end of the tension spring is connected to the middle portion of the first sealing ring along its radial direction, and the other end is connected to the middle portion of the second sealing ring along its radial direction, and the tension spring is suitable for pulling the first sealing ring and the second sealing ring to move towards each other so as to clamp the outer circumference of the second sealing ring.

[0009] As another embodiment of the present application, the inner circumference of the first sealing ring and / or the second sealing ring is connected to the outer circumference of a sealing strip, and the sealing strip is annular and suitable for sealing the gap between the outer circumference of the first sealing ring and / or the second sealing ring and the second sealing ring.

[0010] As another embodiment of the present application, the inner side wall of the first sealing ring and / or the second sealing ring is provided with a plurality of groups of oil storage bags at intervals along its circumferential direction, and lubricating oil is stored inside the oil storage bags. The first sealing ring and / or the second sealing ring is pierced with puncture needles along its thickness direction, and the puncture needles form a sliding seal with the first sealing ring and / or the second sealing ring. When the puncture needles are pulled, they are used to puncture the oil storage bags to allow the lubricating oil to leak out and be suitable for lubricating the rolling elements.

[0011] As another embodiment of the present application, a plurality of through holes are provided at intervals along the circumference of the end of the outer ring body, and the through holes penetrate the slot on the outer ring body. A fastener is installed in the through hole, and the inner end of the fastener is suitable for connecting to the first sealing ring to fix the first sealing ring in the slot.

[0012] As another embodiment of the present application, an oil storage chamber is provided inside the seat body, and lubricating oil is contained in the oil storage chamber. A refueling hole that passes through the oil storage chamber is opened at the outer end of the seat body, and an arc-shaped push-in hole that is adapted to the first spherical surface is provided inside the seat body near the mounting groove. Both ends of the push-in hole extend to both ends of the seat body, and piston structures are slidably inserted inside the push-in hole near both ends. One side of the push-in hole is connected to the oil storage chamber, and the other side passes through the mounting groove. The piston structure is pushed into the push-in hole to push the lubricating oil into the mounting groove to lubricate the outer ring body and the seat body.

[0013] As another embodiment of the present application, the piston structure includes a piston sealingly and slidably connected to the inside of the push injection long hole and a long rod connected to the outer end of the piston, the long rod is suitable for pushing and pulling the piston to slide, and the outer end of the long rod extends to the outside of the seat body; the push injection long hole and the oil storage chamber are connected through a pipeline, a one-way valve is provided inside the pipeline, and the one-way valve is used to allow the lubricating oil to flow in one direction toward the push injection long hole; a removable plug is provided in the refueling hole.

[0014] As another embodiment of the present application, the outer end of the long rod close to the sealing portion extends to between the sealing portion and the seat body, and the outer wall of the sealing portion is connected to a top block, and the top block is spaced apart from the outer end of the long rod; when the outer spherical bearing assembly swings, the top block is suitable for abutting against the long rod and is used to push the long rod to move, so as to push the piston to move toward the inside of the injection long hole.

[0015] The beneficial effect of an outer spherical bearing with a combined inner and outer ring sealing function provided by the present invention is that: compared with the prior art, the outer spherical bearing with a combined inner and outer ring sealing function provided by the present invention comprises a seat body, an outer spherical bearing assembly and a combined sealing structure, the seat body has a mounting groove with a spherical inner wall surface; the outer spherical bearing assembly is arranged in the mounting groove, the outer spherical bearing comprises an inner ring body, an outer ring body and a rolling body, the outer diameter surface of the outer ring body is a first spherical surface adapted to the inner wall surface of the mounting groove, the front end of the inner ring body extends axially and forms an annular sealing portion on the outer ring of the end, and the sealing portion forms a second spherical surface cospherical with the first spherical surface ; The inner wall of the outer ring body and the outer wall of the inner ring body are both formed with grooves along their circumference; the combined sealing structure has an outer circumference and an inner circumference, and the outer circumference and the inner circumference are respectively correspondingly inserted into the grooves of the outer ring body and the inner ring body to seal the gap between the outer ring body and the inner ring body, solving the technical problem that the sealing ring used between the outer ring and the inner ring of the outer spherical bearing is in abutting contact with the outer side of the inner ring, resulting in poor sealing effect and poor dust and water proof effect, thereby affecting the service life of the bearing. It has the technical effect of good sealing effect between the inner ring and the outer ring, good water and dust proof effect, and extending the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A structural cross-sectional view of an outer spherical bearing with a combined inner and outer ring sealing function provided by an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the upper structure of FIG. Figure 3 A schematic structural diagram of a combined sealing structure of an outer spherical bearing with a combined sealing function of inner and outer rings provided by an embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of a first sealing ring structure of a combined sealing structure of an outer spherical bearing having a combined sealing function of an inner and outer ring; Figure 5 for Figure 3 A schematic diagram of a second sealing ring structure of a combined sealing structure of an outer spherical bearing having a combined sealing function of an inner and outer ring; Figure 6 A schematic structural diagram of an end sealing structure of an outer spherical bearing with a combined inner and outer ring sealing function provided by an embodiment of the present invention; Figure 7 for Figure 3 A schematic structural diagram of a first sealing ring and a lever structure of a combined sealing structure of an outer spherical bearing having a combined sealing function of an inner and outer ring; Figure 8 for Figure 2 A schematic diagram of the seat structure of an outer spherical bearing with a combined inner and outer ring sealing function is shown in ; Fig. 9 A state diagram of an outer spherical bearing assembly of an outer spherical bearing with a combined inner and outer ring sealing function provided by an embodiment of the present invention swinging at a certain angle.

[0018] In the figure: 1, seat body; 11, mounting groove; 12, oil storage chamber; 13, long hole for pushing injection; 14, piston structure; 141, piston; 142, long rod; 15, pipeline; 16, one-way valve; 17, plugging; 18, oil channel; 19, end cover; 110, groove; 2. outer spherical bearing assembly; 21. inner ring; 22. outer ring; 23. rolling element; 24. first spherical surface; 25. sealing part; 251. operation hole; 26. second spherical surface; 27. slot; 28. fastener; 29. ​​top block; 3. Combined sealing structure; 31. First sealing ring; 32. Second sealing ring; 33. Forked structure; 331. First sealing ring; 332. Second sealing ring; 333. Tension spring; 334. Sealing strip; 34. Oil storage bag; 35. Needle; 36. Needle body; 4. End sealing structure; 41. First sealing member; 42. Second sealing member; 43. Third sealing member; 44. Spring; 45. Insert hole; 46. Telescopic ring; 47. Top screw; 5. Lever structure; 51. Rod body; 52. Buckle; 53. Protrusion; 54. Support rod; 55. Connecting rod. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Please also read Figures 1 to 9Now, an outer spherical bearing with inner and outer ring combined sealing function provided by the present invention is described. The outer spherical bearing with inner and outer ring combined sealing function comprises a seat body 1, an outer spherical bearing assembly 2 and a combined sealing structure 3, the seat body 1 has a mounting groove 11 with a spherical inner wall surface; the outer spherical bearing assembly 2 is arranged in the mounting groove 11, the outer spherical bearing comprises an inner ring body 21, an outer ring body 22 and a rolling body 23, the outer diameter surface of the outer ring body 22 is a first spherical surface 24 adapted to the inner wall surface of the mounting groove 11, the front end of the inner ring body 21 extends axially and forms an annular sealing portion 25 on the outer ring of the end, the sealing portion 25 is formed with a second spherical surface 26 that is cospherical with the first spherical surface 24; the inner side wall of the outer ring body 22 and the outer side wall of the inner ring body 21 are both formed with a slot 27 along their circumferential direction; the combined sealing structure 3 has an outer circumferential edge and an inner circumferential edge, the outer circumferential edge and the inner circumferential edge are respectively correspondingly inserted into the inside of the slot 27 of the outer ring body 22 and the inner ring body 21 to seal the gap between the outer ring body 22 and the inner ring body 21.

[0021] The present invention provides an outer spherical bearing with a combined sealing function of inner and outer rings. Compared with the prior art, the present invention abandons the ordinary form of sealing ring in the prior art and replaces it with a combined sealing structure 3. It is snap-fitted with the inner ring body 21 and the outer ring body 22, and has good connection and sealing effects. It solves the technical problem that the sealing ring used between the outer ring and the inner ring of the outer spherical bearing, the sealing method between the sealing ring and the outer side of the inner ring is abutment contact, resulting in poor sealing effect, poor dust and water proof effect, thereby affecting the service life of the bearing. The present invention has the technical effects of good sealing effect between the inner ring and the outer ring, good water and dust proof effect, and extending the service life of the bearing.

[0022] In this embodiment, the first spherical surface 24 and the second spherical surface 26 are arranged at intervals, and the sealing part 25 plays a role in blocking the front end between the inner ring body 21 and the outer ring body 22 along the axial direction of the outer spherical bearing assembly 2. The cross-section of the sealing part 25 is similar to the shape of a truncated cone. In this embodiment, by setting a card slot 27 on both the inner ring body 21 and the outer ring body 22, the inner circumference and the outer circumference of the combined sealing structure 3 are respectively inserted into the card slot 27, which has the following effects: first, it is convenient to firmly fix the combined sealing structure 3; second, the sealing effect of the gap between the inner ring body 21 and the outer ring body 22 is good, and the waterproof and dustproof effect is good; third, this installation method is easy to disassemble and install. The combined sealing structure 3 is located on both sides of the rolling body 23 along the axial direction of the bearing of the present invention, that is, it is symmetrically arranged along the axial direction of the bearing of the present invention. In the present invention, the outer circumference refers to the circular circumference located at the outer end, and the inner circumference is the circumference located at the inner end.

[0023] As a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9The combined sealing structure 3 includes a first sealing ring 31 and a second sealing ring 32. The outer circumference of the first sealing ring 31 is inserted into the slot 27 of the outer ring body 22, and the inner circumference is extended to the inner side of the first sealing ring 31 and connected with a bifurcated structure 33; the inner circumference of the second sealing ring 32 is inserted into the slot 27 of the inner ring body 21, and the outer circumference is inserted into the bifurcated structure 33, so that the first sealing ring 31 and the second sealing ring 32 cooperate to form a combined seal. In this embodiment, the structure of the first sealing ring 31 is different from that of the second sealing ring 32, and both are easy to be inserted and fixed with the slot 27, and the bifurcated structure 33 ensures that the two are arranged in a cross-staggered manner. Such a combined sealing effect is better than the sealing effect of the sealing ring in the prior art. The bifurcated structure 33 does not affect installation and disassembly. In this embodiment, the materials of the first sealing ring 31, the bifurcated structure 33 and the second sealing ring 32 are all rubber materials, which are the same as the materials of the sealing ring in the prior art. It allows a certain amount of deformation, which is convenient for its installation and sealing effect. The bifurcated structure 33 in this embodiment is equivalent to a forked structure, and the opening of the fork gradually increases from the outside to the inside along the radial direction of the first sealing ring 31, which facilitates the insertion of the outer circumference of the second sealing ring 32 and can achieve a sealing effect.

[0024] As a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9 The bifurcated structure 33 includes a first sealing ring 331 and a second sealing ring 332. The outer circumference of the first sealing ring 331 is connected to the inner circumference of the first sealing ring 31; the outer circumference of the second sealing ring 332 is connected to the inner circumference of the first sealing ring 31. A bifurcation is formed between the first sealing ring 331 and the second sealing ring 332. A gap is formed between the inner circumference of the first sealing ring 331 and the inner circumference of the second sealing ring 332 along the axial direction of the outer spherical bearing assembly 2, and the outer circumference of the second sealing ring 32 is inserted into the gap. The cross-sectional shapes of the first sealing ring 331 and the second sealing ring 332 are both in the shape of a broken line, and both can play a sealing role. Along the radial direction of the bearing of the present invention, the first sealing ring 331 and the second sealing ring 332 are equivalent to two seals, and can be combined with the second sealing ring 32 to form three seals. The cross-sectional shapes of the inner circumferences of the first sealing ring 331 and the second sealing ring 332 and the outer circumference of the second sealing ring 32 are both in the shape of a sawtooth, so that they are easy to contact each other and can play a sealing role.

[0025] In order to ensure that the first sealing ring 331 and the second sealing ring 332 have a certain clamping force on the second sealing ring 32, thereby ensuring the sealing effect between the first sealing ring 31 and the second sealing ring 32, as a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9A plurality of tension springs 333 are connected between the first sealing ring 331 and the second sealing ring 332. One end of the tension spring 333 is connected to the middle of the first sealing ring 331 along the radial direction, and the other end is connected to the middle of the second sealing ring 332 along the radial direction. The tension spring 333 is suitable for pulling the first sealing ring 331 and the second sealing ring 332 to move in a direction close to each other, so as to clamp the outer circumference of the second sealing ring 32. The tension spring 333 can always provide a pulling force between the first sealing ring 331 and the second sealing ring 332, and can always ensure the clamping of the second sealing ring 32, so as to enhance the sealing effect. Along the circumferential direction of the first sealing ring 331 and the second sealing ring 332, the tension springs 333 are evenly distributed in a plurality. Two tension springs 333 are arranged at intervals along the radial direction of the first sealing ring 331 and the second sealing ring 332.

[0026] As a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9 The inner circumference of the first sealing ring 331 and / or the second sealing ring 332 is connected to the outer circumference of the sealing strip 334. The sealing strip 334 is annular and is suitable for sealing the gap between the outer circumference of the first sealing ring 331 and / or the second sealing ring 332 and the second sealing ring 32. The cross-sectional shape of the sealing strip 334 is a plurality of strips. After it is connected to the first sealing ring 331 and the second sealing ring 332, it can play a role in strengthening the seal. In this embodiment, the sealing strip 334 is arranged on the first sealing ring 331 or the second sealing ring 332 located at the outer end along the axial direction of the bearing of the present invention.

[0027] In the present invention, there are three seals between the first sealing ring 31 and the second sealing ring 32. The sealing of the sealing strip 334 can be regarded as one seal, the sealing between the first sealing ring 331 and the second sealing ring 32 can be regarded as two seals, and the sealing between the second sealing ring 332 and the second sealing ring 32 can be regarded as three seals.

[0028] In order to provide lubrication function while achieving sealing effect, as a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9The inner wall of the first sealing ring 31 and / or the second sealing ring 32 is provided with a plurality of groups of oil storage bags 34 at intervals along its circumferential direction, and lubricating oil is stored in the oil storage bags 34. The first sealing ring 31 and / or the second sealing ring 32 is pierced with puncture needles 35 along its thickness direction, and the puncture needles 35 form a sliding seal with the first sealing ring 31 and / or the second sealing ring 32. When the puncture needles 35 are pulled, they are used to puncture the oil storage bags 34, so that the lubricating oil leaks out and is suitable for lubricating the rolling element 23. The puncture needle 35 passes through the first sealing ring 31 and the second sealing ring 32, the outer end of the puncture needle 35 is located on the outer side of the first sealing ring 31 or the second sealing ring 32, and the inner end is located on the inner side of the first sealing ring 31 and the second sealing ring 32. A hole is provided on the first sealing ring 31 and the second sealing ring 32, and the middle part of the puncture needle 35 is inserted in the hole and can form a seal with the hole. The inner end of the puncture needle 35 is connected to the needle body 36, and the needle body 36 is arranged toward the oil storage bag 34. In a natural state, there is a distance between the needle body 36 and the oil storage bag 34. If lubrication is required, the outer end of the puncture needle 35 can be pulled, and the needle body 36 gradually contacts the oil storage bag 34 until the oil storage bag 34 is punctured, so that the lubricating oil can flow out. After the lubricating oil flows out, it can flow to the rolling body 23, thereby playing a lubricating role. Preferably, a plurality of operation holes 251 are provided on the sealing portion 25 along the axial direction of the bearing of the present invention, and a plug is provided inside the outer end of the operation hole 251, and the plug is used to seal the operation hole 251. When the puncture needle 35 needs to be pushed out, the plug is removed, and a tool is used to pass through the operation hole 251 and pull the puncture needle 35, so that the lubrication function can be achieved. In normal circumstances, the operation hole 251 is in a closed state.

[0029] In order to further improve the installation stability and sealing effect of the combined sealing structure 3, as a specific implementation of an outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9 The end of the outer ring body 22 is provided with a plurality of through holes spaced apart along its circumference, and the through holes penetrate the slot 27 on the outer ring body 22, and a fastener 28 is installed in the through hole, and the inner end of the fastener 28 is suitable for connecting the first sealing ring 31 to fix the first sealing ring 31 in the slot 27. By screwing the fastener 28 clockwise, the inner end of the fastener 28 can be plugged into the end of the first sealing ring 31, so that the first sealing ring 31 can be fixed. Conversely, screwing the fastener 28 counterclockwise can release the fixation of the first sealing ring 31, that is, the first sealing ring 31 can be removed from the slot 27 at this time.

[0030] In order to achieve lubrication between the seat body 1 and the outer ring body 22, that is, lubricate the first spherical surface 24 and the mounting groove 11, as a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9An oil storage chamber 12 is provided inside the seat body 1, and lubricating oil is contained in the oil storage chamber 12. A refueling hole penetrating the oil storage chamber 12 is opened at the outer end of the seat body 1, and an arc-shaped push-in hole 13 adapted to the first spherical surface 24 is provided inside the seat body 1 near the mounting groove 11. Both ends of the push-in hole 13 extend to both ends of the seat body 1, and piston structures 14 are slidably inserted into the interior of the push-in hole 13 near both ends. One side of the push-in hole 13 is connected to the oil storage chamber 12, and the other side passes through the mounting groove 11; the piston structure 14 is moved into the push-in hole 13 to push the lubricating oil into the mounting groove 11, so as to lubricate the outer ring body 22 and the seat body 1. Lubricating oil can be injected into the oil storage chamber 12 through the filling hole, and the lubricating oil in the oil storage chamber 12 can flow into the push-injection long hole 13. By manually pushing the piston structure 14, a positive pressure environment can be formed in the push-injection long hole 13, so that the lubricating oil can be pushed to flow into the mounting groove 11, thereby playing a lubricating role. It should be noted that when the push-in piston structure 14 moves, most of the lubricating oil should not flow in the opposite direction, that is, it cannot flow into the oil storage chamber 12. An air intake valve (which is a prior art and not shown in the figure) can also be set in the filling hole, and external gas can flow into the oil storage chamber 12 through the air intake valve, but the lubricating oil and the internal gas of the oil storage chamber 12 can be prevented from being discharged, so that the air pressure in the oil storage chamber 12 and the push-injection long hole 13 can be maintained in balance. The movement of the piston structure 14 pushing the lubricating oil is similar to the operating principle of the injection needle in daily life.

[0031] As a specific implementation of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9 The piston structure 14 includes a piston 141 which is sealed and slidably connected to the inside of the injection long hole 13 and a long rod 142 which is connected to the outer end of the piston 141. The long rod 142 is suitable for pushing and pulling the piston 141 to slide, and the outer end of the long rod 142 extends to the outside of the seat body 1; the injection long hole 13 is connected to the oil storage chamber 12 through a pipeline 15, and a one-way valve 16 is arranged inside the pipeline 15. The one-way valve 16 is used to make the lubricating oil flow in a one-way direction toward the injection long hole 13; a removable plug 17 is arranged in the oil filling hole. The outer end of the long rod 142 is used for hand holding and pushing and pulling. When pulling, the piston 141 moves in the injection long hole 13, so that the lubricating oil can actively flow to the first spherical surface 24, which can play a lubricating role. A plurality of oil channels 18 are arranged between the injection long hole 13 and the mounting groove 11 to achieve uniform filling of the lubricating oil. To prevent the lubricating oil from flowing into the oil storage chamber 12 when the piston 141 is pushed, a one-way valve 16 is provided in the pipeline 15 to prevent the backflow of the lubricating oil. When refueling is required, the plug 17 is opened and the plug 17 can be closed after refueling.

[0032] To achieve Figure 2The long rod 142 on the right side can push the piston 141 to move. As a specific embodiment of the outer spherical bearing with inner and outer ring combined sealing function provided by the present invention, please refer to Figures 1 to 9 , the outer end of the long rod 142 close to the sealing portion 25 extends to between the sealing portion 25 and the seat body 1, the outer wall of the sealing portion 25 is connected to a top block 29, and the top block 29 is spaced apart from the outer end of the long rod 142; after the outer spherical bearing assembly 2 swings at an angle α (such as Fig. 9 When the outer spherical bearing assembly 2 is in the middle, the top block 29 is suitable for abutting the long rod 142 and pushing the long rod 142 to move, so as to push the piston 141 to move toward the inside of the injection slot 13. The swing of the outer spherical bearing assembly 2 can make the top block 29 gradually approach and abut the outer end of the long rod 142 until the long rod 142 can be pushed to move, thereby achieving the effect of the lubricating oil flowing into the mounting groove 11. It should be noted that in actual operation, in order to enable the bearing of the present invention to swing, when lubrication is not used at the same time, the outer end of the long rod 142 can be placed above the top block 29, that is, the top block 29 will not contact the long rod 142 during the swing.

[0033] Preferably, an end sealing structure 4 is provided on the inner circumferential wall of the seat body 1, and the end sealing structure 4 is used to seal the gap formed between the seat body 1 and the outer end of the sealing part 25. An end cover 19 is connected to one end of the seat body 1 close to the sealing part 25, and a groove 110 is provided on the end cover 19. The outer circumference of the end sealing structure 4 is inserted into the groove 110, and its inner circumference is arranged against the outer circumference of the sealing part 25. By providing the end sealing structure 4, dust, water stains, etc. can be prevented from entering the outer spherical bearing assembly 2 and the space between the outer spherical bearing assembly 2 and the seat body 1. The end sealing structure 4 includes a first seal 41, a second seal 42, and a third seal 43 with a U-shaped cross section. The outer circumference of the first seal 41 is clamped in the groove 110, and the inner circumference extends out of the groove 110 and is connected to the outer circumferences of the second seal 42 and the third seal 43 respectively, and a gap is formed between the second seal 42 and the third seal 43 along the axial direction of the outer spherical bearing assembly 2, that is, a spacing arrangement. A spring 44 is provided between the second seal 42 and the third seal 43, and the two ends of the spring 44 are respectively connected to the second seal 42 and the third seal 43, which can play a pulling role to make the two close to each other. The inner circumferences of the second seal 42 and the third seal 43 abut the second spherical surface 26 of the sealing portion 25. The cross-sections of the second seal 42 and the third seal 43 are both in the shape of a broken line, and the inner circumferences of both are provided with a plug hole 45 extending from the inside to the outside along the radial direction thereof, and a telescopic ring 46 is inserted in the plug hole 45, that is, the outer circumference of the telescopic ring 46 is inserted in the plug hole 45, and the inner circumference is used to abut the second spherical surface 26, wherein the telescopic ring 46 can be selected and used according to actual conditions, and the present invention can be applied to a variety of telescopic rings 46 of different diameters or specifications, and can be installed in the plug hole 45, and the sealing function can be achieved by adjusting the position in the plug hole 45. A top screw 47 is provided at the end of each of the second sealing member 42 and the third sealing member 43 . The inner end of the top screw 47 can abut against the telescopic ring 46 . By screwing the top screw 47 , the position of the telescopic ring 46 in the insertion hole 45 can be fixed.

[0034] A lever structure 5 is connected to one end of the outer ring body 22 near the sealing portion 25. There is a gap between the end of the outer ring body 22 and the sealing portion 25. The lever structure 5 is located in the gap and includes a rod body 51 rotatably connected to the end of the outer ring body 22, a buckle 52 connected to one end of the rod body 51 and connected to the outer end of the needle 35, and a protrusion 53 connected to the other end of the rod body 51. A support rod 54 is provided at the end of the outer ring body 22, and the middle part of one side of the rod body 51 is rotatably connected to the support rod 54 to form a lever. 51 is arranged axially along the radial direction of the outer ring body 22, one end of the rod body 51 close to the puncture needle 35 is detachably connected to one end of the connecting rod 55, and the other end of the connecting rod 55 is hinged with a buckle 52, and the buckle 52 is detachably connected to the outer end of the puncture needle 35, and the protrusion 53 is arranged toward the area between the seat body 1 and the sealing part 25. By using a tool to pass through the area and push the protrusion 53, the rod body 51 rotates and can pull the puncture needle 35 to move at the same time, so that the puncture needle 35 can pierce the oil storage bag 34, realizing the lubrication function of the rolling body 23. The setting position of the rod body 51 avoids the setting of the long rod 142. The use of the lever structure 5 and the operation of opening the operating hole 251 and using a tool to push the puncture needle 35 can be used alternately according to actual conditions, or reasonably used according to specific application scenarios.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An outer spherical bearing with a combined sealing function of inner and outer rings, characterized in that: include: The seat body has a mounting groove with a spherical inner wall surface; An outer spherical bearing assembly is arranged in the installation groove, the outer spherical bearing comprises an inner ring body, an outer ring body and a rolling body, the outer diameter surface of the outer ring body is a first spherical surface adapted to the inner wall surface of the installation groove, the front end of the inner ring body extends axially and forms an annular sealing portion on the outer ring of the end, the sealing portion forms a second spherical surface cospherical with the first spherical surface; the inner inner wall of the outer ring body and the outer outer wall of the inner ring body are both formed with a clamping groove along their circumferential direction; The combined sealing structure has an outer circumference and an inner circumference, wherein the outer circumference and the inner circumference are respectively correspondingly inserted into the slots of the outer ring body and the inner ring body to seal the gap between the outer ring body and the inner ring body.

2. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 1, characterized in that: The combined sealing structure comprises: A first sealing ring, wherein the outer circumference of the first sealing ring is inserted into the slot of the outer ring body, and the inner circumference of the first sealing ring extends toward the inner side of the first sealing ring and is connected with a bifurcated structure; The second sealing ring has its inner circumference inserted into the slot of the inner ring body and its outer circumference inserted into the bifurcated structure, so that the first sealing ring and the second sealing ring cooperate to form a combined seal.

3. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 2, characterized in that: The bifurcation structure comprises: A first sealing ring, wherein the outer circumference of the first sealing ring is connected to the inner circumference of the first sealing ring; A second sealing ring, wherein the outer circumference of the second sealing ring is connected to the inner circumference of the first sealing ring, a fork is formed between the first sealing ring and the second sealing ring, a gap is formed between the inner circumference of the first sealing ring and the inner circumference of the second sealing ring along the axial direction of the outer spherical bearing assembly, and the outer circumference of the second sealing ring is inserted into the gap.

4. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 3, characterized in that: A plurality of tension springs arranged at intervals are connected between the first sealing ring and the second sealing ring, one end of the tension spring is connected to the middle portion of the first sealing ring along the radial direction, and the other end is connected to the middle portion of the second sealing ring along the radial direction. The tension spring is suitable for pulling the first sealing ring and the second sealing ring to move towards each other so as to clamp the outer circumference of the second sealing ring.

5. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 3, characterized in that: The inner circumference of the first sealing ring and / or the second sealing ring is connected to the outer circumference of a sealing strip, which is annular and suitable for sealing the gap between the outer circumference of the first sealing ring and / or the second sealing ring and the second sealing ring.

6. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 2, characterized in that: The inner side wall of the first sealing ring and / or the second sealing ring is provided with a plurality of groups of oil storage bags at intervals along the circumferential direction thereof, and lubricating oil is stored in the oil storage bags. The first sealing ring and / or the second sealing ring is pierced with puncture needles along the thickness direction thereof, and the puncture needles form a sliding seal with the first sealing ring and / or the second sealing ring. When the puncture needles are pulled, they are used to puncture the oil storage bags, so that the lubricating oil leaks out and is suitable for lubricating the rolling element.

7. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 2, characterized in that: The end of the outer ring body is provided with a plurality of through holes spaced apart along its circumference, the through holes penetrate the slot on the outer ring body, a fastener is installed in the through hole, and the inner end of the fastener is suitable for connecting the first sealing ring to fix the first sealing ring in the slot.

8. The outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 1, characterized in that: An oil storage chamber is provided inside the seat body, and lubricating oil is contained in the oil storage chamber. A refueling hole that passes through the oil storage chamber is provided at the outer end of the seat body. An arc-shaped push-in hole that matches the first spherical surface is provided inside the seat body near the mounting groove. Both ends of the push-in hole extend to both ends of the seat body. A piston structure is slidably inserted into the interior of the push-in hole near both ends. One side of the push-in hole is connected to the oil storage chamber, and the other side passes through the mounting groove. The piston structure is pushed into the push-in hole to push the lubricating oil into the mounting groove to lubricate the outer ring body and the seat body.

9. An outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 8, characterized in that: The piston structure includes a piston sealingly and slidably connected to the inside of the push injection long hole and a long rod connected to the outer end of the piston, the long rod is suitable for pushing and pulling the piston to slide, and the outer end of the long rod extends to the outside of the seat body; the push injection long hole and the oil storage chamber are connected through a pipeline, and a one-way valve is provided inside the pipeline, and the one-way valve is used to make the lubricating oil flow in a one-way direction toward the push injection long hole; a removable plug is provided in the refueling hole.

10. An outer spherical bearing with inner and outer ring combined sealing function as claimed in claim 9, characterized in that: The outer end of the long rod close to the sealing part extends to between the sealing part and the seat body, and the outer wall of the sealing part is connected with a top block, and the top block is spaced apart from the outer end of the long rod; when the outer spherical bearing assembly swings, the top block is suitable for abutting against the long rod and is used to push the long rod to move, so as to push the piston to move toward the inside of the injection long hole.

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